Assistant referee Mike Mullarkey, from Exeter, faces his biggest test of the 2014 World Cup so far when hosts Brazil take on Chile for a place in the quarter finals on Saturday.
The match, which kicks off in Belo Horizonte at 5pm UK time, will be watched by millions of people around the world.
But Mike, 43, is well used to the attention, having officiated at the World Cup final in South Africa four years ago alongside referee Howard Webb and fellow assistant referee Darren Cann.
The trio took charge of their first game of the 2014 tournament when Colombia beat Ivory Coast in the group stage. They are now England's only representatives on the pitch in Brazil, following the disappointing first-round exit of Roy Hodgson's squad.
Added pressure has been piled on the officials after some inside the Chile camp claimed Brazil have benefited from favourable refereeing decisions so far in the tournament.
The elite English refereeing team was also on duty four years ago when Brazil knocked Chile out of the World Cup, emerging as 3-0 winners at the same stage in South Africa.
